When displaying a signed email message in Outlook, the below info message is shown to the user:
Trusted Sender Address
However, this is incomplete.
A signed message is not only from a "Trusted Sender," but it is also content that has not been tempered with ("Unmodified content") while in transit.
I suggest to add such a text to the info message shown to the Outlook user.
Depends: Not everything you see has been protected by the signature. Thus such a description would need to go into more detail.
We are always looking for ways to improve the messaging but the idea here was no keep it as simple as possible.
For me "Trusted Sender" says that I can trust that the "Claimed Sender" actually sent this message. This implies that the message has not been tempered with while in transit. (As it would not be from a trusted sender in that case). The text is already quite long because we have to explain a bit why we have a "Trusted Sender". Adding "Unmodified content" in there would complicate things.
E.g. you could have "Unmodified content" from an untrusted sender (a signature that you don't trust) etc. I would like to keep it simpler in a binary state. Well with the trust levels we offer some additional states but mainly its:
For this IMO the only Information that is relevant to make that decision is conveyed in "Trusted Sender".
We also try to explain that a bit on unsigned mails what they are missing. (you cannot be sure who sent or modified this message)
Sorry but I'm leaning here to Wontfix.
I can understand your reasoning, it makes sense.
Thanks for looking into it and the discussion around.